sh: Fix up user_fpu_struct typo for SH-5.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/asm-sh/user.h b/include/asm-sh/user.h
index 706b1c7ba..1a4f43c 100644
--- a/include/asm-sh/user.h
+++ b/include/asm-sh/user.h
@@ -28,7 +28,7 @@
  */
 
 #if defined(__SH5__) || defined(CONFIG_CPU_SH5)
-struct user fpu_struct {
+struct user_fpu_struct {
 	unsigned long fp_regs[32];
 	unsigned int fpscr;
 };